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Yes, or (and still step by step because it's mental arithmetic) ... recall: • 2¹⁰ = 1024 (basic prerequisite) • 1024² = (1000 + 24)² • 1024² = 1000² - 2·1000·24 + 24² • 1024² = 1000000 + 48000 + (20 + 4)² • 1024² = 1048000 + 20² + 2·20·4 + 4² • 1024² = 1048000 + 400 + 160 + 16 • 1024² = 1048576 --- 4¹¹ - 2 = 2²² - 2 = 2¹⁰·2¹⁰·2² - 2 = 1024²·4 - 2 = 1048576·4 - 2 (see "recall" here above) = 4194304 - 2 = 4194302 --- /// final result: ■ 4¹¹ - 2 = 4194302🙂
4^11-2 = 2^22 - 2 = (2^11)(2^11) - 2 = (2048)(2048) - 2 = 4194304 - 2 = 4194302
Way much easy.
Much simpler!!!
😮😮
I did it as in the video through 4^11 - 2 = 2* (2^21 - 1) but then did the multiplications after that. 2^21 = 2*2^20 = 2* (2^10) ^2 = 2*[1024^2]. 1024^2 = (1000+24) ^2 = 1000^2 + 2*24*1000 + 24^2 = 1000000 + 48000 + 576 = 1048000 + 576 = 1048576 --> 2^21 = 2*1048576 = 2,097,152. Now 2^21 - 1 = 2097151 --> 4^11 - 2 = 2 * 2,097,151 = 4,194,302.
Thanks for sharing your approach to the problem in the video 💕💯🥰🥰🙏🔥
Which grade are you teaching , man?
2^10 = 10242^20 = 1000000+48000+576 = 10485764^11 = 2^22 = 4194304Final answer = 4194302
Ahsante
Karibu 🙏💕💯✅🙏🥰
7:15 =254•16513==(200+50+4)16513==(200+100/2+2•2)16513==3302600+1651300/2+33026•2==3302600+ 825650+ 66052=4194302 😁
Why not sum 5600 and 400 immediately and not do things back and forth (starting from 7,26 min in video)? Very smart, isn't it?😂
All these stupid comments are about using a calculator. It’s about how to solve it using arithmetic
You did too long.Everyone did it in 1 minute!!!!
Were you explaining the step by step process?
Really not so interesting...
4^11-2=4194302 final answer
waste of time..😢
Rigorous Math exercise 💪
If waste of time then dont watch.
OMG, no. 2*(2*1024^2-1) = 4194302.
4（1000000+48000+575）+2
Yes, or (and still step by step because it's mental arithmetic) ...
recall:
• 2¹⁰ = 1024 (basic prerequisite)
• 1024² = (1000 + 24)²
• 1024² = 1000² - 2·1000·24 + 24²
• 1024² = 1000000 + 48000 + (20 + 4)²
• 1024² = 1048000 + 20² + 2·20·4 + 4²
• 1024² = 1048000 + 400 + 160 + 16
• 1024² = 1048576
---
4¹¹ - 2
= 2²² - 2
= 2¹⁰·2¹⁰·2² - 2
= 1024²·4 - 2
= 1048576·4 - 2 (see "recall" here above)
= 4194304 - 2
= 4194302
---
/// final result:
■ 4¹¹ - 2 = 4194302
🙂
4^11-2 = 2^22 - 2 = (2^11)(2^11) - 2 = (2048)(2048) - 2 = 4194304 - 2 = 4194302
Way much easy.
Much simpler!!!
😮😮
I did it as in the video through 4^11 - 2 = 2* (2^21 - 1) but then did the multiplications after that. 2^21 = 2*2^20 = 2* (2^10) ^2 = 2*[1024^2]. 1024^2 = (1000+24) ^2 = 1000^2 + 2*24*1000 + 24^2 = 1000000 + 48000 + 576 = 1048000 + 576 = 1048576 --> 2^21 = 2*1048576 = 2,097,152. Now 2^21 - 1 = 2097151 --> 4^11 - 2 = 2 * 2,097,151 = 4,194,302.
Thanks for sharing your approach to the problem in the video 💕💯🥰🥰🙏🔥
Which grade are you teaching , man?
2^10 = 1024
2^20 = 1000000+48000+576 = 1048576
4^11 = 2^22 = 4194304
Final answer = 4194302
Ahsante
Karibu 🙏💕💯✅🙏🥰
7:15 =254•16513=
=(200+50+4)16513=
=(200+100/2+2•2)16513=
=3302600+1651300/2+33026•2=
=3302600
+ 825650
+ 66052
=4194302 😁
Why not sum 5600 and 400 immediately and not do things back and forth (starting from 7,26 min in video)? Very smart, isn't it?😂
All these stupid comments are about using a calculator. It’s about how to solve it using arithmetic
You did too long.Everyone did it in 1 minute!!!!
Were you explaining the step by step process?
Really not so interesting...
4^11-2=4194302 final answer
waste of time..😢
Rigorous Math exercise 💪
If waste of time then dont watch.
OMG, no. 2*(2*1024^2-1) = 4194302.
4（1000000+48000+575）+2